Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
1998-02-06
Nonlinear Sciences
Exactly Solvable and Integrable Systems
26 pages, LaTeX
Scientific paper
10.1088/0305-4470/31/16/009
A universal algorithm to construct N-particle (classical and quantum) completely integrable Hamiltonian systems from representations of coalgebras with Casimir element is presented. In particular, this construction shows that quantum deformations can be interpreted as generating structures for integrable deformations of Hamiltonian systems with coalgebra symmetry. In order to illustrate this general method, the $so(2,1)$ algebra and the oscillator algebra $h_4$ are used to derive new classical integrable systems including a generalization of Gaudin-Calogero systems and oscillator chains. Quantum deformations are then used to obtain some explicit integrable deformations of the previous long-range interacting systems and a (non-coboundary) deformation of the $(1+1)$ Poincar\'e algebra is shown to provide a new Ruijsenaars-Schneider-like Hamiltonian.
Ballesteros Angel
Ragnisco Orlando
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